R Notebook

init environment

## Warning: package 'RColorBrewer' was built under R version 3.5.2

## Warning: package 'scales' was built under R version 3.5.1

## Warning: package 'igraph' was built under R version 3.5.3

Prepare Data

Read Data

corrected person name

Activity Summary

活动统计

## png 
##   2

个人统计

每人参加活动次数

## png 
##   2